Pension and Other Postretirement Benefits - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income before taxes and equity in net earnings of affiliates	$ (177)			$ 252			$ 222	$ 652
Provision for income taxes	39			(62)			(55)	(163)
Net income (loss)	(132)	$ 207	$ 93	200	$ 187	$ 122	168	509
Reclassification out of Accumulated Other Comprehensive Income | Defined benefit plans adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income before taxes and equity in net earnings of affiliates	525			11			550	35
Provision for income taxes	(129)			(2)			(134)	(7)
Net income (loss)	396			9			416	28
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other pension and postretirement	8			11			33	35
Reclassification out of Accumulated Other Comprehensive Income | Settlement loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other pension and postretirement	$ 517			$ 0			$ 517	$ 0